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Evaluating and Improving Functional Driving Vision of Patients With Astigmatism: Phase 3

CompletedNA

Sponsor: University of Virginia

Conditions: Astigmatism

Interventions: Placebo Lenses, Spherical Lenses, Toric Lenses

Countries: United States

It is a common clinical practice to leave small amounts of astigmatism uncorrected in contact lens wearers. Therefore, some drivers who have astigmatism and wear contact lenses may experience blur while driving. The purpose of this study is to determine if correcting small amounts of astigmatism with contact lenses will improve driving safety.

Eligibility overview

Sex: ALL

Age: 18 Years to 39 Years

Healthy volunteers: Yes

Study type: INTERVENTIONAL

Eligibility criteria

Inclusion Criteria:

* Adult licensed driver
* Ages 18-39 years
* Corrected vision of 20/40 or better in each eye
* Astigmatism between 0.75 and 1.75 diopters in each eye
* Nearsightedness between 0 and -9 diopters in each eye
* No active eye infection
* No defective peripheral vision
* No bifocal correction
* Routinely wears toric contact lenses (more than 4 times per week)
* Routinely drives a car (more than 4 times per week)
* No history of motion, sea, or big screen (e.g. IMAX) sickness, and no persistent Simulation Adaptation Syndrome

Exclusion Criteria:

* Corrected vision worse than 20/40 in either eye
* No astigmatism in either eye
* Active eye infection
* Defective peripheral vision
* Wears bifocals
* Wears contact lenses less than 4 times per week
* Drives infrequently (less than 4 times per week)

Locations (1)

Charlottesville, Virginia, United States